Hagens Berman Sobol Shapiro LLP, a national investor-rights law firm with an office in Chicago, IL, today announced it is investigating Great Lakes Dredge & Dock Corp. (NASDAQ:GLDD) (“GLDD” or “the company”) following the resignation of the company’s Chief Operating Officer and President Bruce J. Biemeck, a restatement of the company’s financial statements and a subsequent 30 percent drop in the company’s stock price in after-hours trading.

If you purchased shares of GLDD common stock between August 7, 2012, and March 14, 2013, inclusive (the “class period”), suffered significant losses and wish to move to be a lead plaintiff, you may contact Hagens Berman Partner Reed Kathrein, who is leading the Firm’s investigation, by calling 510-725-3000 or emailing GLDD@hbsslaw.com.

The Firm’s investigation centers around GLDD’s restatement of financial results, issued just after close of trading on March 14, 2013. The company stated that for the second and third financial quarters of 2012, “Certain pending change orders where client acceptance has not been finalized were included as revenue. After a review, the Company concluded 2012 second and third quarter demolition segment revenues were overstated by $3.9 million and $4.3 million, respectively.”

The announcement coincided with the company’s disclosure that Bruce J. Biemeck, the company’s President, COO and former Chief Financial Officer, is departing the company.

Hagens Berman is investigating whether the company knew and failed to disclose material information to investors, particularly revenue issues in the second and third financial quarters of 2012, and thus is responsible for investor losses. Following the company’s restatement, GLDD’s stock price fell by more than 30 percent in after-hours trading on March 14, 2013.

“The company has effectively admitted that, in violation of its established policies, it counted revenue that should have not been counted,” said Mr. Kathrein. “Taken together with the resignation of Mr. Biemeck, we are concerned that the company and certain of its officers may have known about or even been knowingly complicit in the misstatement, to the detriment of investors who lacked this information.”

Hagens Berman reminds whistleblowers with inside information that rewards may be available to individuals who report information leading to a successful enforcement action by the Securities and Exchange Commission. Under the new SEC whistleblower program, whistleblowers who provide original information may receive rewards totaling up to 30 percent of any successful recovery made by the SEC.

Hagens Berman Sobol Shapiro, LLP is an investor-rights class-action law firm with offices in 10 cities, including Chicago. The Firm represents investors, whistleblowers, workers and consumers in complex litigation. More about the law firm and its successes can be found at www.hbsslaw.com. The Firm’s securities law blog is at http://www.meaningfuldisclosure.com.